﻿using System;

class PrintSequence
{
    static void Main()
    {
        for (int i = 2; i < 12; i++)
        {
            // if "i % 2 == 0" the number is even
            if (i % 2 == 0)
            {
                Console.WriteLine(i);
            }
            else 
            {
                Console.WriteLine(-(i));
            }
        }
    }
}